Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings.
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System reliability modeling is one of the most important reliability modeling methods for satellite system. Based on the reliability characteristics of satellite system, we used reliability block diagram, fault tree, dynamic fault tree, Markov, and Monte Carlo modeling methods to build reliability models and summarize logic relationships of all kinds of modeling methods, the principle of choosing ...
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The method of failure modes, effect and criticality analysis (FMECA) is one of absolutely necessarily elements in reliability systems engineering. The effective application of FMECA can improve the freight car quality and reliability. The basic principle of FMECA is introduced. The method to apply FMECA into bogie failure of railway freight car is proposed. The quantitative and qualitative evaluat...
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Aiming to some problems of armored vehicles research and development, such as few new types, few costing data and long research and development(R&D) cycle, it discussed some key techniques about R&D costing analysis of the armored vehicles, including identifying conversion coefficients about time worth, calculating dynamic and static expense and yearly expense distribution. Then, using par...
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The reliability for measure and control system of a space environment simulator is analyzed in the paper to build the models. The paper systematically summarizes the state of measure and control system. The system structure and principles are introduced. According to requirement of environmental test, working procedures of the system are divided into the particular assignments. On the basis of rel...
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In this paper, we describe a reliability model which can be used to analyze the performance and power consumption in resource constrained, data rate scarce, mobile agent-based wireless sensor network (WSN) systems. The primary model is referred to as a generalize access structure congestion (GGC) system which is an extended model from a circular sequential k-out-of-n congestion (CSknC). There are ...
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Phased array radar systems are used by the military for tracking targets and providing weapon engagement support. Each radar system consists of multiple antenna modules arranged in a 2-dimensional grid. An n-by-n antenna array radar system can operate with up to a given number of antenna module failures, with acceptable degraded performance, as long as the failed antennas are not adjacent to each ...
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High wind power penetration can have significant impact on the reliability performance of a power system due to the random nature of wind speed. The impact of wind power penetration on system reliability is critical for system planning and operation. In this paper, the system reliability has been studied considering the impact of wind farms. The universal generating function technique has been use...
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Today's reliability methodologies and tools need to assess increasingly large, complex systems. Moreover, in order to adequately evaluate the system dependability it is necessary to take into the right consideration system dynamics. Combinatorial techniques can be adopted in case the system's units are two-state (Boolean) and stochastically independent. Otherwise, it is requested to recur to lower...
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Maintenance management often focuses on the minimization of the repair cost and the part replacement cost. In this paper a production cost based maintenance scheme is proposed to minimize the production loss due to unscheduled equipment downtime events. Two maintenance plans, standby redundancy and vendor repair, are discussed and their impacts on the downtime cost are analyzed. The idea is to red...
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The traditional approach to handling functional dependence loops is based on Markov models, which are inefficient due to the well-known state space explosion problem. This paper proposes a new and efficient approach to handling functional dependence loops in the system reliability analysis. Based on the divide-and-conquer strategy, the approach transforms a system with functional dependence loops ...
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Based on some practical problems in industrial engineering, a species of two-unit parallel repairable system model is introduced in this paper. The prominent feature of the model is described as follows: if a repair time is sufficiently short (less than some threshold value) that does not affect the system operation, i.e. the effect could be ignored, the system can be considered as being operating...
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The V-ramp test is an important test for GOI (gate oxide integrity) of MOS devices. The criterion for a product under GOI qualification is to meet the requirement with defect density lower than a target defect density (D<sub>0</sub>). This paper studies the methods and guidelines in minimum sample size determination provided by JEDEC/FSA joint publication and points out their drawbacks...
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System reliability optimization involves the selection of components and a system architecture to maximize reliability. Most existing studies assume that the reliability values of the components are deterministic, and known with certainty. However, in practice the reliability of the component is just a point estimate, and therefore, there is some uncertainties associated with it. In this paper, we...
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Life cycle cost is the total cost incurred in the life cycle of a product, including design, development, production, operation, maintenance, support and disposal. Life cycle cost analysis can help engineers to identify equipment and process selection not on the initial purchase cost but rather on the total cost. A reasonable life cycle cost model can lead to a reliable design. In this paper, seve...
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When design complex product like electrohydrostatic actuator (EHA), all of the experts from different disciplines need to co-design and cooperate. Design variables in different disciplines couple together and affect the object functions, constraint condition. This article use multidisciplinary design optimization (MDO) method - collaborative optimization (CO) to design and optimize EHA. When perfo...
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The traditional FMEA method cannot describe the complex system clearly nor serve well for design of system when face to complex system. Aim at these questions, the FMEA method based on functional modeling has been put forward and given its process of analyzing. Take some warship voyaging system for example, analyzing the complex system by FMEA method based on functional modeling and validating the...
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Space environmental simulator (SES) is complicated space experimental equipment. Based on the SES's special system configurations and possibly failure modes, this paper focuses on the research of the specific FMECA and RCMA method which analyzes the reliability issue. This proposed method provides an effectively technical support for the SES's reliability improvement.
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